Could the death of the CD lead to a resurgence of DRM?

A post on Slashdot notes that CD sales continue to decline coinciding with iTunes becoming the third largest music retailer.  Could the end of the CD spell the end of music sharing?  Most shared music comes from ripped CDs.  While individuals can work to unwrap DRM protected music, that is clearly more compicated than ripping a CD, especially since ripping software is cheap and available.  Could the end of the CD lead to more DRM?